Frank Hollberg III, whose family has sold furniture in Senoia, Georgia since 1894, laughed as he recalled the odd sight of watching a man walk through the idyllic downtown holding a head in his hand. The head was a prop and the man an actor filming "The Walking Dead," the hit zombie-themed television series that has drawn millions of fans worldwide and helped turn the small town 25 miles south of Atlanta into a thriving tourist attraction. Senoia, pronounced "Seh-noy" by its 3,300 residents, had seen its fortunes fade after the local cotton and agricultural industries died off.